This is a symptom of the Internet electronic age.....
Imagine your car knowing someone 'official' has plugged in and it changes the settings to pass the test?
Sort of like hiding the dishes and spraying Fabreze around when the locals show up....
The Environmental Protection Agency says Volkswagen intentionally violated the Clean Air Act by using sophisticated software in its diesel-powered cars that detects emissions testing — and "turns full emissions controls on only during the test."
Installed in four-cylinder cars, the software, which the EPA calls a "defeat device" that's meant to trick official tests, allowed diesel Jettas, Beetles and other cars to "emit up to 40 times more pollution" than allowed under U.S. emission standards.
After the automaker was confronted with emission test results this month, the agency says, it admitted that the vehicles contain defeat devices.